Join a club or a group, talk with those who like the same things as you do is much easier
整句意思是：加入一个俱乐部或社团,和那些与你喜欢同样事物的人交流会容易很多.
who like the same things as you do 是定语从句,修饰those,后半句主干是：
talk with those （people） is much easier ,who like the same things as you do起修饰作用.
望采纳!